Lovibond DPD No.1 Free Chlorine Tablets for Water Testing – 10 Pcs
Product Overview
Lovibond DPD No.1 Free Chlorine Tablets are water-testing reagent tablets designed to determine free chlorine levels in water samples. These tablets are widely used in water quality analysis, swimming pool maintenance, drinking water monitoring, and other applications where chlorine disinfection needs to be checked.
Manufactured under the Lovibond brand, DPD No.1 tablets work through a colour-development reaction. When a tablet is added to a water sample containing free chlorine, it produces a pink or magenta colour. The intensity of the colour corresponds to the chlorine concentration and can be measured using a compatible photometer, colorimeter, or appropriate comparator test kit.
This product is supplied in a pack of 10 tablets, making it convenient for routine water testing, field measurements, laboratory analysis, and maintenance checks. The individual tablet format provides convenient dosing and helps reduce handling errors when the recommended testing procedure is followed.
Product Specifications
- Product Name: Lovibond DPD No.1 Free Chlorine Tablets
- Brand: Lovibond
- Model Number: 511052BT
- Pack Size: 10 Tablets
- Product Type: Water Testing Reagent Tablets
- Main Application: Free Chlorine Determination
- Testing Method: DPD Colorimetric Method
- Colour Reaction: Pink to magenta, depending on chlorine concentration
- Origin: India, as listed for this product on Bright Scientific
- Compatibility: Suitable Lovibond instruments and test systems, depending on the specific method
What Is Free Chlorine?
Free chlorine refers to chlorine present in water in the form of dissolved chlorine, hypochlorous acid, and hypochlorite ions. It is commonly used as a disinfectant in water treatment systems.
Monitoring free chlorine helps operators evaluate whether a water treatment process is maintaining the intended disinfectant residual. The required chlorine level varies according to the water source, treatment process, application, and relevant regulations.
DPD No.1 tablets provide a convenient way to measure this parameter using a compatible testing system. The tablets are intended for analytical measurement and should not be confused with chlorine tablets used to disinfect water.
Key Features and Benefits
1. Reliable Free Chlorine Testing
DPD No.1 tablets are designed for the determination of free chlorine using an established colourimetric reaction. When used with a suitable instrument or comparator, they support routine monitoring of chlorine residuals.
2. Convenient Tablet Format
The pre-measured tablet format simplifies reagent dosing. It reduces the need to measure liquid reagents manually and supports consistent testing when the specified sample volume and method are followed.
3. Easy Handling
The tablets are convenient for laboratory and field applications. Their compact packaging makes them suitable for water-testing kits and routine inspection activities.
4. Colour-Based Measurement
The reaction produces a pink or magenta colour in the presence of free chlorine. A compatible photometer or comparator is used to interpret the result according to its specified method.
5. Practical 10-Tablet Pack
The 10-piece pack is useful for occasional testing, field inspections, maintenance work, and laboratories that do not require large quantities of reagent tablets.
6. Compatibility with Water Analysis Equipment
Lovibond offers different DPD tablet formulations for different instruments and testing ranges. Users should confirm that the exact tablet type is compatible with their equipment before testing.
Applications of Lovibond DPD No.1 Tablets
Swimming Pools and Spas: Used to monitor free chlorine residuals as part of routine pool water quality management.
Drinking Water Monitoring: Helps trained personnel assess free chlorine residuals during water treatment and distribution monitoring. A chlorine test alone does not establish that water is safe to drink.
Water Treatment Plants: Supports routine process checks and operational monitoring of disinfectant residuals.
Industrial Water Systems: May be used in appropriate industrial water monitoring procedures where free chlorine measurement is required.
Laboratories and Research Facilities: Suitable for water quality testing, educational demonstrations, and analytical procedures using a compatible DPD method.
Environmental Water Analysis: Can support selected monitoring activities when the test method, sample matrix, and measurement range are appropriate.
How to Use DPD No.1 Free Chlorine Tablets
The precise procedure depends on the instrument or test kit being used. A typical tablet-based photometric procedure is as follows:
- Collect a representative water sample in a clean testing vial.
- Follow the instrument manual for sample volume and blank or zero calibration.
- Remove one DPD No.1 tablet from its packaging and add it to the sample as directed.
- Crush the tablet if required by the test method.
- Mix gently until the tablet dissolves.
- Place the prepared sample in the compatible photometer or colorimeter.
- Follow the instrument’s specified reaction time and measurement instructions.
- Record the free chlorine result, usually expressed in mg/L as Cl₂.
Some comparator methods use a specific sample volume and a colour chart. Always follow the instructions supplied with the particular kit. Do not assume that every DPD No.1 tablet uses the same measurement range or procedure.
Why Choose Lovibond DPD No.1 Free Chlorine Tablets?
Lovibond DPD No.1 tablets offer a practical reagent format for routine free chlorine determination. Their convenient dosing, colour-development chemistry, and compatibility with appropriate water-testing equipment make them useful for laboratories, water treatment personnel, pool maintenance professionals, and field-testing teams.
For dependable results, select the correct tablet formulation for your instrument, use the prescribed sample volume, and follow the manufacturer’s testing procedure. Confirm the product model and compatible measurement range before ordering.
LABORATORY USE ONLY, NO ANOTHER USE.
Frequently Asked Questions (FAQ)
1. What are Lovibond DPD No.1 Free Chlorine Tablets used for?
They are used to determine free chlorine concentration in water using a compatible colourimetric test method.
2. How many tablets are included in the pack?
This product contains 10 tablets.
3. What is the model number?
The model number listed for this product is 511052BT.
4. What colour indicates the presence of free chlorine?
The DPD reaction generally produces a pink or magenta colour. The measured intensity is interpreted using a compatible instrument or comparator.DPD No.1 Free Chlorine Tablets
5. Can these tablets be used for swimming pool water testing?
Yes, when the tablet formulation and measurement range are compatible with the pool water test kit or instrument.
6. Can DPD No.1 measure total chlorine?
DPD No.1 is primarily used for free chlorine measurement. Total chlorine determination generally requires an additional reagent, such as DPD No.3, according to the applicable method.DPD No.1 Free Chlorine Tablets
7. Do I need a photometer to use these tablets?
Not necessarily. A compatible comparator kit may also be suitable. The required equipment depends on the specific product formulation and test method.DPD No.1 Free Chlorine Tablets
8. What is the measurement range of these tablets?
The measurement range depends on the instrument and method. Check the instrument manual and reagent compatibility information rather than assuming a universal range.DPD No.1 Free Chlorine Tablets
9. How should the tablets be stored?
Keep them in their original packaging and follow the manufacturer’s storage instructions. Protect them from moisture and contamination.DPD No.1 Free Chlorine Tablets
10. Do these tablets disinfect water?
No. They are analytical reagents used to measure free chlorine; they are not intended for disinfecting drinking water.DPD No.1 Free Chlorine Tablets
11. Where can I buy Lovibond DPD No.1 Tablets in Bangladesh?
You can check availability and product details on the Bright Scientific website.DPD No.1 Free Chlorine Tablets
